Opacity of blocks does not return to normal after the player moves from beyond a block

[v-jaarba]

Found in: https://levelbuilder-studio.code.org/s/craft17/stage/1/puzzle/12

Not a huge issue at this point, but the blocks become see through when a player is standing on the back side of blocks. When the player moves from beyond the block the opacity does not return to normal.

Repro Steps:

1. Start Hour of code.
2. Go to level 12.
3. Make the code to place an block down with place forward.
4. Run the code.
5. Move Steve/Alex behind the block.
6. Observe that the block become less opaque.
7. Move Steve/Alex away from the block.

Expected Results: The block returns to normal after the player moves away from the block.

Actual results: The block retains its opacity level after the player moves away from the block.

Video:
Code.org [levelbuilder] - Craft17 Development Script #12 - Google Chrome 11_20_2017 12_14_28 PM.zip

[joshlory]

Thanks for moving this over from Trello! Agree this is lower pri, but good to keep this tracking bug open.